We build greenhouses to control the environment and create optimal growing conditions. But playing “Mother Nature” can be very expensive. The energy required for the daily operation of a greenhouse includes lighting, to provide additional radiation, heating or cooling to control the temperature and humidity and air circulation to improve climate uniformity. These add up and drive your energy bill up. By improving the energy efficiency of the greenhouse operation, these expenses can be cut down significantly.
Many common technologies are inefficient, due to historically low energy prices. But energy prices have risen in recent years and are subject to growing instability. The increasing competition pushes greenhouse growers to continuously improve their efficiency.
Greenhouse architects are constantly searching for new agricultural oriented, energy-saving technologies. The aim is to improve greenhouse energy efficiency and optimize the growing process, without damaging the final yield. For example, The number of growers using LED lights keeps increasing. Simultaneously, new horticulture oriented LED lights are being developed.
In this article, we’ll focus on the energy efficiency of climate control.
Understanding greenhouse energy efficiency
When outdoor temperatures are too low, growers resort to heating. When outdoor temperatures are too high, growers use cooling equipment. In both situations, there is a hefty energy requirement. In order to be more efficient, growers strive to avoid energy losses. By isolating the growing area, you can ensure the energy invested into controlling the temperature is not lost.
One important tool for isolation is thermal screens. The more layers of thermal screens inside the greenhouse, the higher the level of isolation. Thus, saving energy and improving efficiency.
A major problem growers face when isolating their greenhouse, is an increase of humidity. High humidity inevitably leads to humidity-related diseases, due to the plants’ constant evaporation. The traditional solution is ventilation, a very inefficient and in some cases useless (when the humidity outside is high, or on rainy days). According to growers, for lack of a better, more efficient solution, they continue using ventilation to prevent humidity problems, while often compromising the climate conditions inside their greenhouse.
How DryGair reduces energy consumption
- Isolating the greenhouse from outdoor conditions – preventing heat loss
- Keeping the energy invested for heating inside the greenhouse
- Separating humidity and temperature treatments (more than 50% of heating expenses are aimed towards humidity reduction)
- Investing a relatively low amount of energy to reduce the humidity (compared to other solutions)
- Creating optimal climate conditions thanks to special air distribution concept
DryGair’s design easily integrates into greenhouses. Allowing them to operate in an isolated environment in order to provide the optimal climate conditions for the plants. It is a tool to maintain the desired temperature inside the greenhouse in an energy efficient method, preventing the negative effects of humid air on the plants.